One of the themes of this New Zealand adventure is species at risk. It as though all of the “sky is falling” warnings of those enviro “Henny Pennys” are finally coming home to roost. As I travel I am encountering fewer birds that before, and therefore fewer penguins. I was hoping to see a Kea on my southern sojourn, but alas, friends say that their range has contracted to Arthurs Pass.
Monarch butterfly populations are crashing in North America, and it seems they are in the southern hemisphere as well. We can do more than wring our hands or just wish for a different outcome. We can plant the species of native plants we know provide food and shelter for Monarch butterflies and other pollinator insects.
Whilst I was in Blenheim I learned about the swan plant, the preferred plant of the Monarch butterfly in New Zealand. Similar to the milkweed in North America, it has a milky substance in its stem and flossy flowering pods. The plant is the preferred place to leave its eggs or form a chrysalis.
My experience with planting milkweed seeds in my home garden has been one of frustration. They never seem to germinate. This year I was able to transplant some dormant milkweed from a native plant garden about to undergo renovation. So far they are slow growing but responding. None of mine look as magnificent as Rosa Davison’s swan plants. Also, if you want to do the Monarchs a favor–stop or greatly reduce using any chemicals including fertilizer in your garden.
In California you can visit a special grove in Pacific Grove where the Monarch’s overwinter. Their numbers have been shrinking. Similarly in New Zealand, Butterfly Bay in Northland’s Whangaroa Harbour is an overwintering site. They have also seen a dramatic decline in butterfly numbers.
You can learn more about planting a pollinator garden for butterflies, or donating to promote butterfly habitats:
North America—Xerces Society http://www.xerces.org/monarch
New Zealand–Moths and Butterflies of New Zealand Trust http://www.monarch.org.nz